Although Lincoln sounds like a name better fit for a bouncing baby boy, it has special meaning to the new parents, especially her daddy.

A 1967 Lincoln is the actor's other baby. The classic car – which he refers to as "Lady Lincoln" – has a star role in "Hit and Run," the 2012 film starring both Shepard and Bell, which he wrote and directed.

So which of his ladies holds the bigger place in his heart? "In no particular order, the Lincoln, then Kristen," Shepard joked last year, which got a laugh out of his fiancée sitting next to him. "Kristen is slightly harder to replace though … I've been in a 12-year committed relationship with the Lincoln."

But there's no hard feelings or jealousy on Bell's part. "She's good to me," she added. "When he said, 'I wrote a movie starring me and Lady Lincoln. Would you play a supporting female role?' I said, 'Oh, I guess.'"

According to Laura Wattenberg, author of The Baby Name Wizard, Lincoln is growing in popularity ... but for boys. The moniker is "part of the presidential name boom that includes names like Madison, Jackson, Kennedy, Carter, and Reagan," she tells omg!. "It's rare for girls, though, since it doesn't resemble familiar female names in any of its forms."